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July, 1919 less pull on the scale beam 12 accord- ing to the degree of submergence of the weight: The plunger 29 is composed of a number of sections joined together by threaded extensions, 33. In design, the plunger is hollow and tapers from top to bottom. The bottom section of the casing, 35, is equipped with «an _ in- let pipe, 36, which supplies oil to the casing. Several baffle plates, 38, are arranged in the pipe 37. These prevent rapid surging of the oil. The object or this is to prevent the wave motion outside the vessel from affecting the level of the oil in: the: casing. | Check Valve Controls Supply 'A sufficient quantity of oil to fill the casing, 34, is earried in the tank, 40, which is connected to the pipe, 37, by the unit- 39. Sea water is introduced into the tank by the pipe 4. This water, of course, exerts a pressure on the oil and, due to the fact: that oil and water will not mix,. the. oil remains free at the top .of the tank but at. the same time under pressure exerted from the outside through the medium of the pipe 41. This pipe is equipped with a shut-off valve, 42, and a check valve 43. Normally, this check -valve remains slightly open but a sudden tossing of the ship, while passing through a heavy sea for instance, causes the inrushing water to close the valve tightly. In operation, when a _ predetermined load has been placed in the ship, water gradually flows into the tank, 40, which forces the oil into the casing, 34. 'This causes the plunger, 29, to become more buoyant, consequently moving it up- ward. This permits the weight 27 to actuate the scale beam; moving its outer end upward. Then the © shift weight z9 is moved until the beam balances, thus ascertaining the weight FIG. 6 oe cg 20 SSS Zee FIGS. 5, 6 AND 7 SHOW DETAILS OF WEIGHING MECHANISM WHILE FIG. 8 IS A CHECK VALVE CONTROLLING THE WATER SUPPLY ' of the load. As the load is increased, the water continues to exert additional pressure on the oil which increases the buoyancy of the plunger, 29, when the beam can again be balanced: To correct the reading of the scale beam when the vessel is not on an even keel, due to loading conditions, the compensating mechanism shown in Figs. bars, 54 and 45, in place. THE MARINE REVIEW 3 and 4 is used. In these illustrations, 45 are standards that carry a journal 46 which merges into the bifurcated construction shown at 47 and a depend- ing bar, 48, To reduce friction, anti- friction bearings, 49, are interposed be- tween the unit, 46, and the standards, 45. The unit, 46, is suspended on a knife-edge bearing, 50, which permits the weight, 51, to cause the bar, 48, always to remain in a vertical position. The weight is held in place by nuts, $2 and 53, which- may be adjusted to increase or decrease. the leverage. A thumb nut, 56, holds the spring When the compensating mechanism is not in use, the thumb screw is loosened and the spring bar, 55, turned to a position at right angles to that shown in Fig. 3 after which the bar, 48, is moved to one side and the lever,' 57, raised until the lower end of the bar, 48, ° projects through the aperture, 58. This causes the device to be held out of operation with the spring, 54, held at a distance from the beam, 172. When it is necessary to use the compensating mechanism, it is arranged as" illustrated' in' Figs. 4) 3° ando14, wherein the knife bars, 54 and 45,. en- gage, or nearly engage, the - knife edges, r3*.and 14, If. the forward section of the vessel is loaded first, naturally the vessel departs from an even keel which causes the weight and associated parts to swing toward the front and forces the spring, 55, to press against the knife edge, 14, thus assist- ing the weight 27 in proportion to the amount the vessel is pitched. If the stern of the vessel is loaded first, the device functions in the opposite man- ner. Fig. 5 is a detailed view of the sliding weight, ro. This is provided with traction wheels, 67, and with a pointer, 62. The beam 12 is equipped with a tack, 63, which engages the pinion, 64. A shaft and thumb nut, 65, is provided for actuating the pinion. By this means the weight is readily moved along the beam. The beam is provided with a line of graduations, 66, as shown in Fig. 6, which indicate pounds and tons while a second set of gradua- tions, 67, are provided for indicating feet. By this arrangement, it is pointed out, not only the weight of the load is ascertained but the draft of the vessel is also readily determined at any time. Improved Sternpost Fastening the shell plating of vessels to the sternpost is often a comparative- ly expensive operation due to the fact that special boss plates, faired in place, are necessary where the shell plating joins the shaft boss. To provide a > _ flanges 395 ready means of fastening the shell plat- ing at this juncture, a Portland, Oreg., inventor, Vincent Scarperi, recently de- veloped the sternpost shown in the accompanying illustration. This device is patented. : In the illustration, 4 is a side eleva- tion of the sternpost, B a plan section at the line EE on. illustration A, C is a perspective view to illustrate the STERNPOST PROVIDED WITH FLANGES FOR FASTENING SHELL PLATING IN PLACE OVER THE SHAFT BOSS) means provided for fastening the shell plating while D is an end view of the bossed portion of the sternpost looking toward the stern from the inside of the vessel. | Flanges Are Provided The rudder post is shown at r while 2 is the propeller post. These two members are joined by scarfs 3? and 4. The boss for the shaft is shown at 5 and through this the shaft extends as shown at 6 in illustration C. This por- tion of the propeller post is cast with so proportioned and extended forward that a good bearing is formed for fastening the shell plating without the use of special boss plates. These flanges are shown at 7. The inventor points out that the shell plating, shown at 8, requires but little scarfing before it is riveted to the propeller post. Portions of the shell plates are cut away, as shown at 9, so.that. they. may be attached to marginal portions of the flanges 7 which, it is pointed out, have substantially straight surfaces. Pusey & Jones Co., Gloucester City, N. J., recently launched the ApraHam Lincotn, a 12,500-ton cargo vessel. The LINCOLN is a sister ship to the InDIAN- APOLIS, recently launched.